Achronix Speedster22i User Macro Guide - Manual (Page 42)

I/O Cells IPAD_DIFFD2
Speedster Macro Cell Library www.achronix.com PAGE 25
Table 1-29: Parameters
Parameter Defined Values Default Value
locationp
locationn
iostandard “LVCMOS18”
drive
rstmode
rstvalue
slew
keepmode
hysteresis
open_drain “true”, “false” “false”
pvt_comp “none”, “own” “none”
odt “off”, “on” “off”
termination “50”, “60”, “75”, “100”, “120”, “240” “50”
Figure 1-13: IPAD_DIFFD2 Input Timing Diagram (assumes data_en = 1’b1)
Verilog Instantiation Template
IPAD_DIFFD2 #(.locationp(""),
.locationn(""),
.iostandard("LVCMOS18"),
.drive("16"),
.rstmode("async"),
.rstvalue("low"),
.hysteresis("none"),
.pvt_comp("none"),
.termination("50"),
.odt("off"))
instance_name (.pad(user_pad), .padn(user_padn), .douta(user_douta),
.doutb(user_doutb), .data_en(user_data_en), .txrstn(user_txrstn),
.rxrstn(user_rxrstn), .rstn(user_rstn), .clk(user_clk));
VHDL Instantiation Template
------------- ACHRONIX LIBRARY ------------
library speedster22i;
use speedster22i.components.all;
------------- DONE ACHRONIX LIBRARY ---------
-- Component Instantiation
IPAD_DIFFD2_instance_name : IPAD_DIFFD2
“” ““
“” ““
See Table 1‐1
"2", "4", "6", "8", "12", "16" "16"
“sync”, “async” “async”
“low”, “high” “low”
“fast”, “slow” “slow”
"pullup", "pulldown", "none" “none”
"none", "schmitt" “none”
clk
douta
doutb
pad
padn